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    All things Motorsport and the skies
  • Location
    3rd rock from the Sun
  1. That makes sense.... I get the same result whether I use 45s or 2min subs. I'll pay attention to any repeating pattern. After a quick Google, there's ways to dial it out, so I'll give that a go too. Thanks!
  2. I bring mine down too. The polemaster is on my 'to buy' list, but a bit down the line. I feel like I can get a fairly good polar alignment for my needs at the moment, because I get the same results when I take 2 min exposures. I've got a SkyWatcher 150 on it.
  3. Hi all, Hope you're all safe and well. Quick question I've got on my mount. I've Got a Celestron CGEM that I've had for 6+ years, and I don't know if it's starting to lose its guiding ability, or if it's me that's not doing something quite right? Polar aligning my scope is something I do every time I go out, because I mostly use it for AP. My method is align using 2 start align, plus the extra 4 star align, and then I use Celestron's All Star Align to get polar aligned. I also use a laser crosshair eyepiece through a x2.5 barlow to make sure I've got the stars perfectly centered. Last night's example is I was taking 45s subs, and I've had to dump knocking on for half of my subs due to star trails. I'll have about 2 or 3 subs that are pin sharp, and then another 2-3 that have noticeable star trails, then I'll got back to 1 or 2 that are fine and so on throughout the whole 3-4 hour session. Is it something that I'm not doing right? Or has the mount lost its guiding ability? Any help would be appreciated. Many thanks in advanced. Clear skies!
  4. After a quick play, I've ended up with this. Much happier with that one! Thanks again Freddie! By the way, I'm not afraid of comments on helping me improve my processing! So if you spot anything, fire away
  5. Thanks for that Freddie! So that's where I'm going wrong. I was trying to add my RGB images into the RGB channels of my IR image. So create the RGB as normal, then add a layer with the IR image with the settings you've described? With the IR image not being in colour, how does this work? Would it not show as a grey layer on top? Apologies if this is a silly question... just trying to get my head around how it works!
  6. Hi all, Haven't been on here for a long time, but that's because I haven't had the scope out for a couple of years! Working abroad unfortunately meant I couldn't go out and play! Now I'm back in the UK full time, I'm back out doing what I love Anyway, I digress... Something I've always struggled with is LRGB/IRRBG processing. I've got a mono CCD camera and I mainly use the IR Pass and RGB filters to image planets. In this case, Jupiter. I've got an L filter, but I rarely use this because of the IR Pass. Am I right in thinking that I can use the IR Pass in place of the L when it came to processing? With regards to the RGB, I can merge these in Photoshop no problem. My struggles come with adding the 4th image, be it L or IR Pass. How to I merge all 4 images? Actually, while I'm here, can I merge all 5? IR PassLRGB? I've tried following the tips in the 'Easy LRGB Planetary Processing in Registax' thread, but my final image comes out black. What I've ended up doing is merging the IR Pass (in place of R), G and B images to get a final colour image for the time being. I've attached the image that this has produced... Any help would be appreciated. Thank you!! Coss.
  7. Great pictures! Love the GRS showing an appearance on the other side too
  8. lol. That's quite impressive for "back of envelope" stuff lol. For me, that would be calculators, pieces of paper everywhere, books open and lots of head scratching lol. I've just had a look on in-the-sky.org at the same date and time and got this..... Close enough for me! There we have it. Stattelite it is
  9. I'll give that a go and see what the difference is
  10. Mystery solved then! It was just one of those things when flicking through the pictures and it was a case of "What the hell is that?!" lol
  11. Sounds like 2" LRGB's it is! lol Thanks again for the clear up!
  12. I've just gone on the website to backtrack and find out what it was. Picture was taken on the 27th Dec 2013 at 00:29 (first pic) and 00:31 (last pic)
  13. Ah ok, in that case, all my DSO AP is done using prime focus with a 2" nosepiece. The reason I'm asking is because my H-alpha, OIII and SII filters are 2", and my LRGB filters are 1 1/4". I'm just trying to figure out if I need to invest in 2" LRGB filters or if I can use my 1 1/4" nosepiece with the LRGB filters. Thanks for the input guys
  14. Ah, OK. The difference between the first and last pic is like 2 mins. So it's not moving fast across the sky.
  15. OK, thanks for that. Now that raises the next question. What's prime focus, and a focal focus? :/
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